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2021-11-16 / TYC 1874-01605-1 / (162) Laurentia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Marek Zawilski O+ CCD M203 PL GPS+ 17:56:01 17:57:16.34 17:57:31.47 17:59:27 0.15 0.15 15.13 113.5
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#71 : db87be75-a649-4b7f-81e2-fe2eacdb2f17 [db: observed]
JPL#71 : d239c029-b3ab-43ef-aa5a-558cc0fa4c43 [db: observed]

Using prediction db87be75-a649-4b7f-81e2-fe2eacdb2f17 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2021-11-16, 17:56 UT (JD = 2459535.247)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 325None11.869 139°, 64° 2.440625e618910.20.0° None2011-05-02 not scaled 2011-04-21
# 326None11.869 313°, 51° 2.440625e618910.20.0° None2011-05-02 not scaled 2011-04-21
Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

   
Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : db87be75-a649-4b7f-81e2-fe2eacdb2f17 [observed]

 Occultation Date + Time   : 2021-11-16 at 17:45:30 UT +/- 0.02 min  [1]
 Object Designation        : (162) Laurentia
 Orbit Class               : MBA
 Star Designation          : GDR3 3443458830926590464
 Star Coordinates (ICRF)   : RA = 05 48 40.8645, DE = +29 14 52.221  [2]
 Star Magnitudes           : G = 11.13 mag, RP = 10.92 mag, BP = 11.23 mag
 Object Magnitude          : V = 13.49 mag
 Estimated Magnitude Drop  : 2.5 mag
 Estimated Max. Duration   : 13.3 sec
 Object Mean Diameter      : 99 km  (src: astorb)
 Speed of the shadow       : 7.5 km/s
 Elongation to Moon & Sun  : 62° (sunlit = 94%), Sun = 147°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.1 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#71

 Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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